Before comparing costs and timelines, it helps to understand what each channel is doing mechanically — because the operational differences explain most of the tradeoffs.
Pay-Per-Click (PPC)
With dental PPC — most commonly Google Ads — your practice bids to appear at the top of search results for terms like "dentist near me" or "Invisalign consultation [city]". You pay each time someone clicks your ad. Campaigns can be live within days, and you can target by location, search intent, device, and time of day.
The key constraint: visibility is rented. The moment your budget runs out or your campaign pauses, your ads disappear. There is no residual effect. You are also competing in an auction where other dental practices, DSOs, and aggregator sites are bidding on the same terms — and dental keywords are among the more competitive in local search advertising.
Search Engine Optimization (SEO)
SEO works by making your practice website more visible in the unpaid (organic) search results — including Google's Map Pack, which drives a significant share of local dental searches. This involves technical site health, content that matches patient search intent, and earning links from relevant, credible websites.
The key constraint: results are delayed. Most dental practices working with a capable SEO partner see meaningful movement in four to six months, with compounding gains through month nine to twelve and beyond. The upside is that organic visibility does not disappear when you stop paying for a month — it is an asset that builds over time.
Understanding this fundamental difference — rented visibility versus earned visibility — shapes every budget and timing decision that follows.